Wide-voltage high-power conduction charging device for new energy industry

Abstract

The invention discloses a wide-voltage high-power conduction charging device for the new energy industry, and relates to the technical field of conduction charging, the wide-voltage high-power conduction charging device comprises a charging pile, a power distribution cabin is installed above the charging pile, a power module is arranged in the power distribution cabin, and the power module comprises at least three power blocks; the power distribution cabin is internally provided with a conversion module, the conversion module comprises a connecting frame set, nut lantern rings are symmetrically installed below the connecting frame set, reciprocating screw shafts are installed in the nut lantern rings, and the combination of the conversion power module is changed. According to the charging pile, a single small-power part is used for charging a small-sized electric vehicle, and the three modules work at the same time to provide quick charging for a large-sized electric bus, so that the universality of the charging pile is remarkably improved through the flexible adjusting mode, diversified charging requirements are met, and daily slow charging of the small-sized vehicle and emergency quick charging of the large-sized vehicle can be freely dealt with.

Description

Technical Field

[0001] This invention relates to the field of conductive charging technology, specifically to a wide-voltage, high-power conductive charging device for the new energy industry. Background Technology

[0002] Wide-voltage, high-power conductive charging devices, also known as DC charging piles, are core facilities for efficiently replenishing energy for new energy equipment in the new energy industry. They can convert AC power from the power grid into DC power suitable for new energy equipment, support a wide voltage range input and high power output, and significantly shorten the charging time of electric vehicles, electric buses and other equipment. These devices are widely used in public charging stations, parking lots and other scenarios, providing strong support for the development of the new energy industry.

[0003] However, existing technologies still have the following drawbacks in practical applications:

[0004] 1. Compared to existing DC charging piles, which mostly use a fixed combination design for their power modules, this fixed combination design leads to multi-dimensional application difficulties. First, in terms of adaptability, given the increasing power demands of new energy vehicle models, such as the charging power difference of several times between small passenger cars and electric heavy trucks, fixed power output easily leads to resource mismatch. Excessive power results in energy waste and equipment redundancy, while insufficient power significantly prolongs charging time and affects user experience. Second, from an operation and maintenance perspective, when a fixed power module fails, the repair process often involves complete disassembly and system troubleshooting, which is not only time-consuming and labor-intensive but also causes the charging pile to be shut down for a long time, reducing operational efficiency. In addition, when dealing with peak electricity consumption or a surge in regional charging demand, fixed combination charging piles are difficult to upgrade and expand quickly, and cannot flexibly respond to dynamically changing market demands, limiting the full life cycle value of charging facilities and hindering the efficient development of the new energy industry.

[0005] 2. Compared to existing intelligent charging piles that employ highly integrated intelligent control systems, where power modules are tightly coupled with communication and control units, when a power module malfunctions, the system struggles to quickly and accurately pinpoint the specific fault. Maintenance personnel must then conduct a comprehensive inspection and repair of the entire complex intelligent control system, potentially requiring the replacement of the entire control unit. This maintenance approach is not only time-consuming and labor-intensive but also leads to prolonged downtime of the charging pile, significantly impacting normal user experience. Furthermore, the high difficulty of repair and the large number of components involved significantly increase maintenance costs, reducing operational efficiency and economic viability, and placing considerable operational and maintenance pressure on charging pile operators.

[0006] Furthermore, even though intelligent charging stations can adapt to changes in power mode to some extent, their heat dissipation methods generally adopt a fixed mode. That is, regardless of the charging power, the cooling fan or water cooling system maintains a constant operating intensity and cannot dynamically adjust the heat dissipation intensity according to the actual load. Therefore, in low-power charging scenarios, the heat dissipation equipment runs continuously without load, which not only causes unnecessary energy waste but also accelerates the mechanical wear of the equipment and shortens its service life. When charging at high power, the inability to increase the heat dissipation intensity in time can easily lead to overheating of the power module, reducing charging efficiency and equipment stability.

[0007] Therefore, in view of this, the present invention proposes a wide-voltage, high-power conductive charging device for the new energy industry to make up for and improve the shortcomings of the prior art. Summary of the Invention

[0008] To address the aforementioned technical problems, this invention provides a wide-voltage, high-power conductive charging device for the new energy industry, thereby resolving the technical issues raised in the background section.

[0009] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a wide-voltage, high-power conductive charging device for the new energy industry, comprising a charging pile, a power distribution compartment installed above the charging pile, a power module disposed inside the power distribution compartment, the power module comprising at least three power blocks, namely a small power component located in the middle and high power components located on both sides, a conversion module disposed inside the power distribution compartment, the conversion module comprising a connecting frame assembly, nut collars symmetrically installed below the connecting frame assembly, and reciprocating screws installed inside each nut collar, the reciprocating screws driving the high power components to move in opposite directions to both sides with the small power components as a reference through the nut collars, thereby switching the overall charging power of the charging pile.

[0010] Furthermore, symmetrical movable heat exchange plates are installed on the outside of the power module. The movable heat exchange plates are made entirely of thermally conductive material, and each movable heat exchange plate is equipped with an assembly frame. A sealed cavity is formed between the movable heat exchange plates and the assembly frame. Connecting pipes are evenly installed on the side wall of the power distribution compartment. The assembly frame is connected to the external environment through the connecting pipes. A one-way valve is installed inside the connecting pipe. When the aforementioned high-power components move in opposite directions, the movable heat exchange plates move towards the inner side wall of the power distribution compartment, compressing the air in the sealed cavity formed between the movable heat exchange plates and the assembly frame. This generates thrust to drive the one-way valve to open, allowing external air to flow into the power distribution compartment and act on the surface of the movable heat exchange plates for heat exchange.

[0011] Furthermore, the connecting frame assembly includes no fewer than three assembly frames, which are arranged horizontally and fitted onto the outside of the low-power component and the high-power component. The nut collar is fixedly connected to the lower surface of the outer assembly frame of the high-power component, and the movable heat exchange plate is fixedly connected to the outer wall of the outer assembly frame of the high-power component.

[0012] Furthermore, the upper and lower surfaces of the assembly frame in the connecting frame group are rotatably connected with guide rollers. The guide rollers are used for guiding the installation and disassembly of the power module, as well as for limiting the movement of high-power components. The surface of the guide rollers is provided with an anti-slip and wear-resistant coating.

[0013] Furthermore, the inner diameter of the assembly frame in the connecting frame assembly is larger than the outer diameter of the low-power component and the high-power component, ensuring that the low-power component and the high-power component can move smoothly within the connecting frame assembly. At the same time, the arc surface of the guide roller is in contact with the outer wall of the low-power component and the high-power component.

[0014] Furthermore, the power distribution compartment is equipped with an energized contact, which is electrically connected to the charging pile. In the initial state, the low-power component is in contact with the energized contact and is in an energized state, while the high-power component is offset from the energized contact.

[0015] Furthermore, the nut collar and the reciprocating screw shaft form a ball screw structure, and the outer wall of the reciprocating screw shaft is provided with interlocking thread grooves.

[0016] Furthermore, a dual-axis motor is installed on one side of the reciprocating screw shafts that are close to each other, and the reciprocating screw shafts are fixedly connected to the outer wall of the output shaft end of the dual-axis motor.

[0017] Furthermore, the movable heat exchange plate is made entirely of copper, which can quickly absorb the heat generated when high-power components are working. The movable heat exchange plate is rectangular in shape, which maximizes its fit with the internal space of the power distribution compartment and increases the heat exchange area.

[0018] Furthermore, the movable heat exchange plate is slidably connected to the assembly frame, and the assembly frame is symmetrically and fixedly connected to the inner wall of the power distribution compartment.

[0019] Furthermore, each of the connecting pipes is equipped with a filter screen, and the filter screen is at the same horizontal plane as the valve of the one-way valve.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] (1) By subdividing the power module into small power components and high power components, the present invention achieves power adaptation for different vehicle types. Users can change the combination of conversion power modules according to actual needs, from charging small electric vehicles with a single small power component to providing fast charging for large electric buses with three modules working simultaneously. This flexible adjustment method significantly improves the versatility of charging piles and meets diverse charging needs. It can handle both daily slow charging of small vehicles and emergency fast charging of large vehicles with ease.

[0022] Compared to existing technologies that design charging piles separately for each power specification, this invention combines different power components, allowing a single pile to cover multiple power ranges, which not only reduces hardware costs but also improves site utilization.

[0023] Compared to existing intelligent charging piles, where a faulty power module requires the entire complex intelligent control system to be inspected or replaced, this invention can quickly locate and replace the faulty module, reducing downtime caused by equipment failure, ensuring that the charging pile can continuously and stably provide services to users, and improving overall operational efficiency.

[0024] (2) In actual use, users can also flexibly choose slow or fast charging mode according to their own needs. At night or when they are not sensitive to charging time, users can choose slow charging to charge the vehicle in a more economical way. When they urgently need to use the vehicle, the fast charging mode can replenish enough power to the vehicle in a short time. This autonomy not only improves the user experience, but also better adapts to different usage scenarios, meets the charging needs of users in various situations, and makes the use of charging piles more convenient and personalized.

[0025] The charging pile features a modular design with centralized installation, resulting in a compact structure and simple installation layout. The guide rollers designed inside the connecting frame not only facilitate the initial installation and subsequent disassembly work for the staff, but also limit the movement of the power module when switching charging power, ensuring the accuracy and stability of the module movement. This auxiliary design improves the maintainability and ease of operation of the charging pile, and reduces the risk of equipment damage caused by improper human operation.

[0026] The connecting frame separates each power module, effectively preventing heat transfer between different modules. Especially when using a small number of power modules, it ensures that unused modules are not affected by heat. When multiple power modules are working simultaneously, the dispersed layout of the modules increases the space for heat flow, which is beneficial for heat dissipation. This dispersed layout during use improves the stability and reliability of the charging pile in wide voltage and high power scenarios, reduces the risk of equipment failure due to overheating, and ensures that the charging pile can operate safely and efficiently under various operating conditions.

[0027] (3) More importantly, by introducing the sealing linkage between the moving heat exchange plate and the assembly frame, the present invention achieves "dynamic matching of power intensity and heat dissipation intensity". In the low-power charging stage, natural heat dissipation can be relied on to meet the low power consumption requirements, avoiding the idling and energy consumption of components such as cooling fans; when switching to high-power charging, the movement of high-power components drives the moving heat exchange plate to compress the sealed cavity, and the internal pressure triggers the one-way valve to open automatically, actively introducing external air to form convection heat dissipation with the charging pile, thereby meeting the targeted heat dissipation in the high-power charging mode.

[0028] The movable heat exchange plate, made of high-purity copper, can quickly absorb the heat generated by the high-power module due to its excellent thermal conductivity. It also achieves efficient heat exchange through surface airflow. Unlike the existing technology where the heat of the charging pile diffuses throughout the charging cavity, this invention concentrates the heat in the movable heat exchange plate area. Combined with the directional airflow introduced by the one-way valve, it greatly improves the heat dissipation efficiency and ensures the stability of the charging pile under continuous high load conditions.

[0029] The design of the long rectangular moving heat exchange plate not only ensures its smooth movement within the assembly frame, avoiding seal failure due to shaking, but also maximizes the use of the space inside the power distribution compartment, providing the largest surface area in contact with air. Furthermore, the standardized shape facilitates mass production and reduces manufacturing costs.

[0030] (4) The sealing structure of the mobile heat exchange plate and the assembly frame forms a double protective barrier. On the one hand, the sealed cavity isolates external dust, water vapor and other impurities when running at low power, preventing them from intruding into the power distribution compartment and affecting the performance of electrical components. On the other hand, when the one-way valve is opened to introduce air for heat dissipation, the airflow only contacts the surface of the mobile heat exchange plate and will not directly wash the power module, effectively preventing dust from accumulating on key parts such as contacts and circuit boards. This design greatly enhances the charging pile's ability to adapt to harsh environments such as wind, sand and humidity, and shortens the overall maintenance cycle from quarterly to annual.

[0031] In this system, when charging stations undergo short-term inspections and maintenance, staff do not need to disassemble the electrical wiring, power modules, or other core components inside the power distribution compartment. They only need to open the side walls to directly access the movable heat exchange plates for cleaning, repair, or replacement. This significantly shortens maintenance time and improves efficiency. Furthermore, the independently replaceable movable heat exchange plates reduce maintenance costs; when components age, only the movable heat exchange plates need to be replaced, rather than the entire cooling structure, further reducing repair expenses. Attached Figure Description

[0032] Figure 1 This is a front-view three-dimensional structural diagram of the internal structure of the power distribution compartment of the present invention;

[0033] Figure 2 This is a rear-view three-dimensional structural diagram of the power distribution compartment of the present invention;

[0034] Figure 3 This is a schematic diagram of the installation process of the power component of the present invention;

[0035] Figure 4 This is a schematic diagram of the three-dimensional structure of the connecting frame assembly of the present invention;

[0036] Figure 5 This is a schematic diagram of the power module before conversion according to the present invention;

[0037] Figure 6 This is a schematic diagram showing the positional relationship between the power module and the assembly frame of the present invention;

[0038] Figure 7 This is a schematic diagram showing the positional relationship between the movable heat exchange plate and the assembly frame of the present invention.

[0039] Figure 8 This is a schematic diagram showing the position of the movable heat exchange plate and the assembly frame before the power module conversion in this invention.

[0040] Figure 9 This is a schematic diagram of the three-dimensional structure of the power module after conversion according to the present invention;

[0041] Figure 10 This is a schematic diagram showing the position of the movable heat exchange plate and the assembly frame after the power module conversion of the present invention.

[0042] The numbers on the map are:

[0043] 1. Charging pile; 11. Power distribution compartment;

[0044] 2. Conversion module; 21. Connecting frame assembly; 22. Guide roller; 23. Power contact; 24. Nut collar; 25. Reciprocating screw; 26. Dual-axis motor; 27. Moving heat exchange plate; 28. Assembly frame; 29. ​​Connecting pipe; 210. One-way valve; 211. Filter screen;

[0045] 3. Power modules; 31. Low-power components; 32. High-power components. Detailed Implementation

[0046] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0047] It should be noted that the structure and working principle of the above-mentioned charging pile 1, power distribution compartment 11, power module 12 and other devices are existing technologies and will not be described in detail here.

[0048] Example 1

[0049] Please refer to Figures 1-10 As shown, a wide-voltage, high-power conductive charging device for the new energy industry includes a charging pile 1. A power distribution compartment 11 is installed above the charging pile 1. A power module 3 is installed inside the power distribution compartment 11. The power module 3 includes at least three power blocks, namely a small power component 31 located in the middle and a large power component 32 located on both sides. A conversion module 2 is installed inside the power distribution compartment 11. The conversion module 2 includes a connecting frame group 21. Nut collars 24 are symmetrically installed below the connecting frame group 21. A reciprocating screw 25 is installed inside each nut collar 24. The reciprocating screw 25 can drive the large power component 32 to move to opposite sides with the small power component 31 as a reference through the nut collars 24, thereby switching the overall charging power of the charging pile 1.

[0050] It should be noted that the connecting frame assembly 21 includes at least three assembly frames, which are horizontally arranged and fitted onto the outside of the low-power component 31 and the high-power component 32. The nut collar 24 is fixedly connected to the lower surface of the outer assembly frame of the high-power component 32, and the movable heat exchange plate 27 is fixedly connected to the outer wall of the outer assembly frame of the high-power component 32. Guide rollers 22 are rotatably connected to the upper and lower surfaces of the assembly frames in the connecting frame assembly 21. The guide rollers 22 are used for guiding the installation and removal of the power module 3 and for limiting the movement of the high-power component 32. The surface of the guide rollers 22 is provided with an anti-slip and wear-resistant coating. The inner diameter of the assembly frames in the connecting frame assembly 21 is larger than the outer diameter of the low-power component 31 and the high-power component 32. The guide roller 22 is positioned to ensure that the low-power component 31 and the high-power component 32 can move smoothly within the connecting frame assembly 21. At the same time, the arc surface of the guide roller 22 is in contact with the outer wall of the low-power component 31 and the high-power component 32. The power distribution compartment 11 is equipped with an energized contact 23, which is electrically connected to the charging pile 1. In the initial state, the low-power component 31 is in contact with the energized contact 23 and is in an energized state, while the high-power component 32 is staggered from the energized contact 23. The nut collar 24 and the reciprocating screw 25 form a ball screw structure. The outer wall of the reciprocating screw 25 is provided with interlocking thread grooves. A dual-axis motor 26 is installed on the side of the reciprocating screw 25 that is close to each other. The reciprocating screw 25 is fixedly connected to the outer wall of the output shaft end of the dual-axis motor 26.

[0051] Specifically, during initial installation, the workers place the low-power component 31 and the high-power component 32 sequentially into the assembly frame of the connecting frame group 21. Since the inner diameter of the assembly frame is larger than the outer diameter of the power component, and the guide rollers 22, which are rotatably connected to the upper and lower surfaces of the assembly frame, have an anti-slip and wear-resistant coating, and their arc surfaces fit against the outer wall of the power component, the guide rollers 22 provide stable guidance during the installation of the power module 3. This allows the power module 3 to smoothly slide into the assembly frame along the guide rollers 22. After installation, the low-power component 31 is in the middle position, with the high-power components 32 symmetrically distributed on both sides. At this time, the low-power component 31 is in contact with the energized contact 23 in the power distribution compartment 11 and is in an energized state, ready for low-power charging. The high-power component 32 is offset from the energized contact 23 and is in a non-energized standby state. When the user needs to switch to the high-power charging mode, the dual-axis motor 26 is triggered to start. The output shaft of motor 26 drives the reciprocating screws 25 on both sides to rotate synchronously. Since the nut collar 24 and the reciprocating screw 25 form a ball screw structure, and the outer wall of the reciprocating screw 25 has intersecting threaded grooves, the nut collar 24 moves along the axis of the reciprocating screw 25 under the action of threaded transmission. Since the nut collar 24 is fixedly connected to the lower surface of the outer assembly frame of the high-power component 32, it will drive the high-power components 32 on both sides to move towards each other with the low-power component 31 in the middle as the reference. During the movement, the guide roller 22 continuously plays a limiting role to ensure that the high-power component 32 moves smoothly along a straight line and avoids deviation. As the high-power component 32 moves, it gradually approaches the energized contact 23 until it is in contact with the energized contact 23 and energized. At this time, the low-power component 31 and the two high-power components 32 work at the same time to realize the switching of the overall charging power of the charging pile 1 and meet the high-power charging requirements.

[0052] Please refer to Figures 1-10As shown, it should be noted that movable heat exchange plates 27 are symmetrically installed on the outside of the power module 3. The movable heat exchange plates 27 are made entirely of thermally conductive material, and each movable heat exchange plate 27 is equipped with an assembly frame 28. The movable heat exchange plates 27 and the assembly frame 28 form a sealed cavity. Connecting pipes 29 are evenly installed on the side wall of the power distribution compartment 11. The assembly frame 28 is connected to the external environment through the connecting pipes 29. A one-way valve 210 is installed inside the connecting pipe 29. When the high-power components 32 move in opposite directions, the movable heat exchange plates 27 move towards the inner side wall of the power distribution compartment 11, compressing the space within the sealed cavity formed between the movable heat exchange plates 27 and the assembly frame 28. Air, in turn, generates thrust to drive the one-way valve 210 to open, allowing external air to flow into the power distribution compartment 11 and act on the surface of the movable heat exchange plate 27 for heat exchange. The movable heat exchange plate 27 is made of high-purity copper, which can quickly absorb the heat generated when the high-power component 32 is working. The movable heat exchange plate 27 is rectangular in shape to maximize its fit within the internal space of the power distribution compartment 11 and increase the heat exchange area. The movable heat exchange plate 27 is slidably connected to the assembly frame 28, which is symmetrically fixed to the inner wall of the power distribution compartment 11. The interior of the connecting pipe 29 is equipped with a filter screen 211, and the filter screen 211 and the valve of the one-way valve 210 are at the same horizontal plane.

[0053] Specifically, after power module 3 is installed, such as Figure 6 and Figure 8 As shown, the movable heat exchange plate 27 is located at the farthest point from the side wall of the power distribution compartment 11 inside the assembly frame 28. At this time, the volume of the sealed cavity formed between the movable heat exchange plate 27 and the assembly frame 28 reaches its maximum, and the air pressure inside the cavity is balanced with the external environmental pressure. The one-way valve 210 in the connecting pipe 29 remains closed, preventing external air from entering the power distribution compartment 11. At this time, in the low-power charging mode where only the intermediate low-power component 31 is activated, although the low-power component 31 will generate some heat, due to its low power, the generated heat can be dissipated through the natural heat dissipation of the movable heat exchange plate 27 and the slow convection of air inside the power distribution compartment 11.

[0054] When the user switches to the high-power charging command through the operation interface of the charging pile 1, the dual-axis motor 26 drives the high-power components 32 on both sides to move in opposite directions with the low-power component 31 as the reference. During this process, the movable heat exchange plate 27, which is fixedly connected to the outer wall of the external assembly frame of the high-power component 32, moves synchronously and begins to move horizontally towards the inner wall of the power distribution compartment 11. Since the movable heat exchange plate 27 and the assembly frame 28 are connected by a sliding seal, and the sealed cavity formed by the two is gradually compressed during the movement, the air pressure inside the cavity increases sharply. As the movable heat exchange plate 27 continues to approach the inner wall of the power distribution compartment 11, the air pressure inside the sealed cavity continues to increase. When the pressure value exceeds the opening threshold of the one-way valve 210, the air pressure overcomes the one-way valve 210 and pushes the valve to rotate horizontally and open. At this time, the external air, driven by the pressure difference, flows through the connecting pipe 29. After being filtered by the filter screen 211, the air flows orderly into the power distribution compartment 11. The filter screen 211 and the one-way valve 210 are located on the same horizontal plane, ensuring that the air first passes through the filter screen 211 to intercept dust, particles and other impurities, preventing them from entering the power distribution compartment 11 and contaminating the internal components. After the external air enters the power distribution compartment 11, it directly contacts the surface of the high-purity copper moving heat exchange plate 27. The excellent thermal conductivity of high-purity copper allows the heat generated by the high-power component 32 to be quickly conducted to the surface of the moving heat exchange plate 27, and then transferred to the flowing air through external air convection, achieving efficient heat dissipation. The long rectangular design of the moving heat exchange plate 27 maximizes its fit with the internal space of the power distribution compartment 11, greatly increasing the heat exchange area and further improving heat dissipation efficiency, ensuring that the temperature of the power module 3 is always maintained within the safe operating range during high-power charging.

[0055] like Figure 9 and Figure 10 As shown, after the high-power component 32 moves to contact with the energized contact 23 and completes the power switching, the moving heat exchange plate 27 stops moving towards the inner wall of the power distribution compartment 11. At this time, the pressure inside the sealed cavity reaches a stable state. Although the moving heat exchange plate 27 stops moving, the one-way valve 210 remains open. External air flows into the power distribution compartment 11 after being filtered by the filter screen 211 in the connecting pipe 29. As the high-power component 32 continues to work, the high-purity copper moving heat exchange plate 27 quickly absorbs the large amount of heat it generates, and the surface temperature rises significantly. The newly flowing cold air continuously contacts the surface of the moving heat exchange plate 27. The two airflows overlap and form a stable air circulation path. As heat exchange continues, the surface temperature of the moving heat exchange plate 27 gradually decreases. During this process, the air mainly flows by natural convection, supplemented by the natural flow of external cold air into the power distribution compartment 11, forming a weak but continuous air circulation to maintain the heat dissipation effect.

[0056] When the charging power switches from high-power mode to low-power mode, the high-power components 32 on both sides move in opposite directions to reset, and the moving heat exchange plate 27 moves away from the inner wall of the power distribution compartment 11. The volume of the sealed cavity gradually increases, and the air pressure inside the cavity decreases. When the pressure value is lower than the closing threshold of the one-way valve 210, the one-way valve 210 automatically closes, blocking the entry of external air again. The power distribution compartment 11 returns to the sealed state, and the device returns to the low-power natural heat dissipation mode. This adaptive heat dissipation method enables the device to dynamically adjust the heat dissipation intensity according to the actual load requirements, effectively reducing energy consumption and the risk of impurity intrusion while ensuring the heat dissipation effect.

[0057] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wide-voltage, high-power conductive charging device for the new energy industry, comprising a charging pile (1), wherein a power distribution compartment (11) is installed above the charging pile (1), characterized in that: The power distribution compartment (11) is equipped with a power module (3). The power module (3) includes no less than three power blocks, namely a small power component (31) located in the middle and a large power component (32) located on both sides. The power distribution compartment (11) is equipped with a conversion module (2). The conversion module (2) includes a connecting frame group (21). Nut collars (24) are symmetrically installed below the connecting frame group (21). Reciprocating screws (25) are installed inside the nut collars (24). The reciprocating screws (25) drive the large power component (32) to move in opposite directions to both sides with the small power component (31) as the reference through the nut collars (24), thereby switching the overall charging power of the charging pile (1). The power module (3) is symmetrically equipped with movable heat exchange plates (27). The movable heat exchange plates (27) are made of thermally conductive material. The movable heat exchange plates (27) are all equipped with assembly frames (28). The movable heat exchange plates (27) and the assembly frames (28) form a sealed cavity. The side walls of the power distribution compartment (11) are uniformly equipped with connecting pipes (29). The assembly frames (28) are connected to the external environment through the connecting pipes (29). The connecting pipes (29) are equipped with one-way valves (210). When the high-power components (32) move in opposite directions, the movable heat exchange plates (27) move towards the inner side wall of the power distribution compartment (11), compressing the air in the sealed cavity formed between the movable heat exchange plates (27) and the assembly frames (28), thereby generating thrust to drive the one-way valves (210) to open, allowing external air to flow into the power distribution compartment (11) and act on the surface of the movable heat exchange plates (27) for heat exchange.

2. The wide-voltage, high-power conductive charging device for the new energy industry according to claim 1, characterized in that: The connecting frame group (21) includes no fewer than three assembly frames, and the assembly frames are arranged horizontally and are fitted onto the outside of the low-power component (31) and the high-power component (32). The nut collar (24) is fixedly connected to the lower surface of the outer assembly frame of the high-power component (32), and the movable heat exchange plate (27) is fixedly connected to the outer wall of the outer assembly frame of the high-power component (32).

3. The wide-voltage, high-power conductive charging device for the new energy industry according to claim 1, characterized in that: The upper and lower surfaces of the assembly frame are rotatably connected with guide rollers (22). The guide rollers (22) are used for guiding the installation and disassembly of the power module (3) and for limiting the movement of the high-power component (32). The surface of the guide rollers (22) is provided with an anti-slip and wear-resistant coating.

4. A wide-voltage, high-power conductive charging device for the new energy industry according to claim 1, characterized in that: The inner diameter of the assembly frame is larger than the outer diameter of the low-power component (31) and the high-power component (32) to ensure that the low-power component (31) and the high-power component (32) can move smoothly within the connecting frame assembly (21). At the same time, the arc surface of the guide roller (22) is in contact with the outer wall of the low-power component (31) and the high-power component (32).

5. A wide-voltage, high-power conductive charging device for the new energy industry according to claim 1, characterized in that: The power distribution compartment (11) is equipped with an energized contact (23), which is electrically connected to the charging pile (1). In the initial state, the low-power component (31) is in contact with the energized contact (23) and is in an energized state, while the high-power component (32) is offset from the energized contact (23).

6. A wide-voltage, high-power conductive charging device for the new energy industry according to claim 1, characterized in that: The nut collar (24) and the reciprocating screw shaft (25) form a ball screw structure, and the outer wall of the reciprocating screw shaft (25) is provided with interlocking thread grooves.

7. A wide-voltage, high-power conductive charging device for the new energy industry according to claim 1, characterized in that: A dual-axis motor (26) is installed on one side of the reciprocating screws (25) that are close to each other, and the reciprocating screws (25) are fixedly connected to the outer wall of the output shaft end of the dual-axis motor (26).

8. A wide-voltage, high-power conductive charging device for the new energy industry according to claim 1, characterized in that: The movable heat exchange plate (27) is made of high-purity copper, which can quickly absorb the heat generated by the high-power component (32) during operation. The movable heat exchange plate (27) is rectangular, which maximizes the fit with the internal space of the power distribution compartment (11) and increases the heat exchange area.

9. A wide-voltage, high-power conductive charging device for the new energy industry according to claim 1, characterized in that: The movable heat exchange plate (27) is slidably connected to the assembly frame (28), and the assembly frame (28) is symmetrically fixed to the inner wall of the power distribution compartment (11).

10. A wide-voltage, high-power conductive charging device for the new energy industry according to claim 1, characterized in that: Each of the connecting pipes (29) is equipped with a filter screen (211), and the filter screen (211) and the valve of the one-way valve (210) are on the same horizontal plane.

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